The Weekly Litigation News Digest is now live. Subscribe now
The patent EP3548214 was granted to Markforged on Feb 1, 2023. The application was originally filed on Dec 1, 2017 under application number EP17877371A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US5900207 |
| INTERNATIONAL-SEARCH-REPORT | US2004207124 |
| INTERNATIONAL-SEARCH-REPORT | US2005242473 |
| INTERNATIONAL-SEARCH-REPORT | US5286573 |
| INTERNATIONAL-SEARCH-REPORT | US8871355 |
| INTERNATIONAL-SEARCH-REPORT | WO2016081499 |
| OPPOSITION | US2004207124 |
| OPPOSITION | US2005242473 |
| OPPOSITION | US2015145169 |
| OPPOSITION | US2015183167 |
| OPPOSITION | US2016229128 |
| OPPOSITION | US2016256925 |
| OPPOSITION | US2016311165 |
| OPPOSITION | US5286573 |
| OPPOSITION | US5900207 |
| OPPOSITION | US8871355 |
| OPPOSITION | WO2004050323 |
| OPPOSITION | WO2016012486 |
| OPPOSITION | WO2016081499 |
| OPPOSITION | WO2017009190 |
| SEARCH | US2005242473 |
| SEARCH | US2015145169 |
| SEARCH | US2015183167 |
| SEARCH | US2016229128 |
| SEARCH | US2016256925 |
| SEARCH | US2016311165 |
| SEARCH | WO2004050323 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents
Jul 7, 2025
Jul 1, 2025
Jul 1, 2025
Jul 1, 2025
Jun 26, 2025
Jun 26, 2025
Jun 26, 2025
Jun 26, 2025
Jun 26, 2025
Jun 6, 2025
Jun 6, 2025
Jun 6, 2025
Oct 1, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Mar 5, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Nov 16, 2023
Nov 16, 2023
Oct 31, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Feb 14, 2023
Jan 5, 2023
Decision to grant a European patent
Search/Exam
Dec 6, 2022
(Electronic) Receipt
Search/Exam
Dec 6, 2022
Filing of the translations of the claims
Search/Exam
Dec 6, 2022
French translation of claims
Search/Exam
Dec 6, 2022
German translation of the claims
Search/Exam
Dec 6, 2022
Letter accompanying subsequently filed items
Search/Exam
Dec 2, 2022
Sep 22, 2022
Sep 16, 2022
Non-patent literature filed by a third party
Search/Exam
Sep 16, 2022
Observations by third parties
Search/Exam
Aug 11, 2022
Aug 11, 2022
Aug 11, 2022
Aug 11, 2022
Intention to grant (signatures)
Search/Exam
Aug 11, 2022
Text intended for grant (clean copy)
Search/Exam
Aug 11, 2022
Nov 23, 2021
(Electronic) Receipt
Search/Exam
Nov 23, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 23, 2021
Nov 22, 2021
Nov 16, 2021
(Electronic) Receipt
Search/Exam
Nov 16, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 16, 2021
Jul 23, 2021
Annex to the communication
Search/Exam
Jul 23, 2021
Communication from the Examining Division
Search/Exam
Jul 15, 2021
Examination started
Search/Exam
Feb 25, 2021
(Electronic) Receipt
Search/Exam
Feb 25, 2021
Feb 25, 2021
Amended claims with annotations
Search/Exam
Feb 25, 2021
Amendments received before examination
Search/Exam
Feb 25, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 25, 2020
Aug 10, 2020
Refund of fees
Search/Exam
Aug 5, 2020
Aug 5, 2020
European search opinion
Search/Exam
Aug 5, 2020
Information on Search Strategy
Search/Exam
Aug 5, 2020
Supplementary European search report
Search/Exam
Jul 20, 2020
Search started
Search/Exam
Jan 13, 2020
(Electronic) Receipt
Search/Exam
Jan 13, 2020
Jan 13, 2020
Amended claims with annotations
Search/Exam
Jan 13, 2020
Amendments received before examination
Search/Exam
Jan 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 11, 2019
Jul 19, 2019
Jul 10, 2019
Refund of fees
Search/Exam
Jul 8, 2019
Communication to designated inventor
Search/Exam
Jun 28, 2019
(Electronic) Receipt
Search/Exam
Jun 28, 2019
Request for entry into the European phase
Search/Exam
Jun 17, 2019
Apr 12, 2019
Information on entry into European phase
Search/Exam
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 7, 2018
Copy of the international search report
Search/Exam
Jun 7, 2018
Published international application - A1
Search/Exam